Patents by Inventor Kazuhiko Yokoyama

Kazuhiko Yokoyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10088025
    Abstract: An automatic transmission for an electric vehicle includes: a belt type continuously variable transmission mechanism; a constantly meshed parallel shaft type gear transmission mechanism which is connected to an output portion of the belt type continuously variable transmission mechanism, and which has a plurality of shift stages; an input gear which is disposed to the input shaft to be rotated relative to the input shaft, and which is drivingly connected to one of a plurality of shift gears fixed to an output side shaft of the constantly meshed parallel shaft type gear transmission mechanism; and an engaging clutch mechanism which is disposed to the input shaft, and which selectively connects one of the input portion of the belt type continuously variable transmission mechanism and the input gear to the main electric motor.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: October 2, 2018
    Assignee: JATCO Ltd
    Inventors: Atsushi Yamada, Toshiaki Segawa, Toshiyuki Okamoto, Kazuhiko Yokoyama, Kazuo Oguri, Takuya Yamazaki
  • Patent number: 10054202
    Abstract: A torque cam device includes: a drive cam member; a driven cam member; and an intermediate cam member which includes a second drive cam surface that is formed on one end, and that is arranged to be abutted on the first drive cam surface, a second driven cam surface that is formed on the other end, and that is arranged to be abutted on the first driven cam surface, and which is arranged to be rotated relative to the driven cam member and the driven cam member, the first and second drive cam surfaces being abutted on each other when a power is transmitted from the drive cam member to the driven cam member, the first and second driven cam surfaces being abutted on each other when the power is transmitted from the driven cam member to the drive cam member.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 21, 2018
    Assignee: JATCO Ltd
    Inventor: Kazuhiko Yokoyama
  • Publication number: 20180080534
    Abstract: A torque cam device for an automatic transmission including: a drive cam member; and a driven cam member, each of the first drive cam surface and the first driven cam surface including an entire annular circumference equally divided into at least two sections each having a helical curved surface according to a cam angle, and connection portions formed between the equally divided helical curved surfaces, and at least one of the helical curved surfaces of the first drive cam surface and the first driven cam surface having a guide groove which is continuous in an entire circumference, and which is arranged to guide a movement of the ball.
    Type: Application
    Filed: February 1, 2016
    Publication date: March 22, 2018
    Applicant: JATCO Ltd
    Inventors: Kazuhiko YOKOYAMA, Hideyuki FUKUI, Masato TANAKA, Tatsuo YOKOTE, Ichirou TSUCHIYA
  • Publication number: 20160208892
    Abstract: A torque cam device includes: a drive cam member; a driven cam member; and an intermediate cam member which includes a second drive cam surface that is formed on one end, and that is arranged to be abutted on the first drive cam surface, a second driven cam surface that is formed on the other end, and that is arranged to be abutted on the first driven cam surface, and which is arranged to be rotated relative to the driven cam member and the driven cam member, the first and second drive cam surfaces being abutted on each other when a power is transmitted from the drive cam member to the driven cam member, the first and second driven cam surfaces being abutted on each other when the power is transmitted from the driven cam member to the drive cam member.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 21, 2016
    Applicant: JATCO Ltd
    Inventor: Kazuhiko YOKOYAMA
  • Publication number: 20160208896
    Abstract: An automatic transmission for an electric vehicle includes: a belt type continuously variable transmission mechanism; a constantly meshed parallel shaft type gear transmission mechanism which is connected to an output portion of the belt type continuously variable transmission mechanism, and which has a plurality of shift stages; an input gear which is disposed to the input shaft to be rotated relative to the input shaft, and which is drivingly connected to one of a plurality of shift gears fixed to an output side shaft of the constantly meshed parallel shaft type gear transmission mechanism; and an engaging clutch mechanism which is disposed to the input shaft, and which selectively connects one of the input portion of the belt type continuously variable transmission mechanism and the input gear to the main electric motor.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 21, 2016
    Applicant: JATCO Ltd
    Inventors: Atsushi YAMADA, Toshiaki SEGAWA, Toshiyuki OKAMOTO, Kazuhiko YOKOYAMA, Kazuo OGURI, Takuya YAMAZAKI
  • Patent number: 8549952
    Abstract: A robot includes a base, a plurality of link mechanisms, at least one drive device, and a controller. The plurality of link mechanisms are provided on the base. Adjacent link mechanisms among the plurality of link mechanisms are connectable to each other. The at least one drive device is to bend and extend the plurality of link mechanisms. The controller is configured to control the at least one drive device.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: October 8, 2013
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Kenji Matsukuma, Takayuki Nakamura, Kazuhiko Yokoyama, Kazuhiro Fukudome
  • Publication number: 20110192247
    Abstract: A robot includes a base, a plurality of link mechanisms, at least one drive device, and a controller. The plurality of link mechanisms are provided on the base. Adjacent link mechanisms among the plurality of link mechanisms are connectable to each other. The at least one drive device is to bend and extend the plurality of link mechanisms. The controller is configured to control the at least one drive device.
    Type: Application
    Filed: April 19, 2011
    Publication date: August 11, 2011
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kenji MATSUKUMA, Takayuki Nakamura, Kazuhiko Yokoyama, Kazuhiro Fukudome
  • Patent number: 7950710
    Abstract: A robot includes a base unit, at least two link mechanisms arranged on the base unit, drive units capable of bending and expanding the link mechanisms, and a control unit controlling the drive units. At least one drive unit has a drive force larger than those of the other drive units, and the other drive units are passively displaced by external forces larger than their own drive forces.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: May 31, 2011
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Kenji Matsukuma, Takayuki Nakamura, Kazuhiko Yokoyama, Kazuhiro Fukudome
  • Publication number: 20100010670
    Abstract: A robot includes a base unit, at least two link mechanisms arranged on the base unit, drive units capable of bending and expanding the link mechanisms, and a control unit controlling the drive units. At least one drive unit has a drive force larger than those of the other drive units, and the other drive units are passively displaced by external forces larger than their own drive forces.
    Type: Application
    Filed: September 17, 2009
    Publication date: January 14, 2010
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kenji Matsukuma, Takayuki Nakamura, Kazuhiko Yokoyama, Kazuhiro Fukudome
  • Publication number: 20060215927
    Abstract: The present invention relates to a signal processing apparatus and a method, a recording medium, and a program, in which portions except an edge can be smoothed while the edge whose change in pixel value is steep is held correctly. A pixel of attention is determined in step S11, and a neighbouring pixel is determined in step S12. In step S13, a difference in pixel values between the pixel of attention and each neighbouring pixel is calculated. In step S14, according to a relationship in size between the difference and a threshold value ?., flags are raised for the neighbouring pixel and a neighbouring pixel which are symmetrical. Furthermore, a flag is also raised for a neighbouring pixel away from, in view of the pixel of attention, the symmetrical neighbouring pixel for which the flag is raised. In step S15, 7-pixel taps centered around the pixel of attention are averaged by weight.
    Type: Application
    Filed: April 19, 2004
    Publication date: September 28, 2006
    Inventors: Shintaro Okada, Kazuhiko Ueda, Mitsuyasu Asano, Takeshi Kubozono, Kazuhiko Yokoyama
  • Patent number: 6688274
    Abstract: In a motorcycle intake structure, an air cleaner is provided under a sheet and an intake passage is connected to an upper opening of the air cleaner. The intake passage is formed by the sheet, a rear fender and a side cover. An inlet port from the outside of the intake passage opens rearward in a upper rear portion of the side cover. This motorcycle intake structure forms a smooth intake airflow with reduced intake resistance and free from influence by dirt or other debris.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: February 10, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuhiko Yokoyama, Takanori Okuma, Keisuke Inomoto, Shoji Yamamoto
  • Publication number: 20020040699
    Abstract: In a motorcycle intake structure, an air cleaner is provided under a sheet and an intake passage is connected to an upper opening of the air cleaner. The intake passage is formed by the sheet, a rear fender and a side cover. An inlet port from the outside of the intake passage opens rearward in a upper rear portion of the side cover. This motorcycle intake structure forms a smooth intake airflow with reduced intake resistance and free from influence by dirt or other debris.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 11, 2002
    Inventors: Kazuhiko Yokoyama, Takanori Okuma, Keisuke Inomoto, Shoji Yamamoto
  • Patent number: 5367297
    Abstract: A display system in a vessel which includes various sensors for detecting various operating and navigating conditions of the vessel and a single display unit for displaying information regarding these conditions. The single display unit is comprised of a fixed display which displays information regarding particular operating and navigating conditions that are frequently monitored. The single display unit also includes a variable display which has a standby state and a display state and which also has a plurality of alternate display modes and a warning display which automatically displays warning information regarding at least one of the conditions that is being sensed when the particular condition is detected to be outside of its predetermined range.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: November 22, 1994
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Kazuhiko Yokoyama
  • Patent number: D522924
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: June 13, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuhiko Yokoyama, Manabu Ichikawa, Tetsuya Nakazawa, Kazuhiro Kudo
  • Patent number: D374416
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: October 8, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shiro Miyamoto, Kazuhiko Yokoyama
  • Patent number: D384601
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: October 7, 1997
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tadao Hiruma, Kazuhiko Yokoyama
  • Patent number: D389780
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: January 27, 1998
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akihiro Komatsu, Kazuhiko Yokoyama
  • Patent number: D412464
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: August 3, 1999
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Ichihara, Kazuhiko Yokoyama
  • Patent number: D428363
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: July 18, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Munehiro Sugimoto, Kazuhiko Yokoyama, Takeshi Tajima
  • Patent number: D746179
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: December 29, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroaki Tsukui, Kazuhiko Yokoyama